Mass box A= 10 grams: Mass box B=5 grams; Mass box C-made of one A and one B
How many boxes of A would be required to make 30 grams of C?
0.5
2
1
1.5

The organism shown is a free-living one that is anchored to the bottom of ponds and streams during one stage of its life cycle what is the common name for the group to which this organism belong

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